Massive Mirai Botnet Hides Its Control Servers On Tor

“Following a failed takedown attempt, changes made to the Mirai malware variant responsible for building one of today’s biggest botnets of IoT devices will make it incredibly harder for authorities and security firms to shut it down,” reports Bleeping Computer. An anonymous reader writes: Level3 and others” have been very close to taking down one of the biggest Mirai botnets around, the same one that attempted to knock the Internet offline in Liberia, and also hijacked 900,000 routers from German ISP Deutsche Telekom.The botnet narrowly escaped due to the fact that its maintainer, a hacker known as BestBuy, had implemented a domain-generation algorithm to generate random domain names where he hosted his servers. Currently, to avoid further takedown attempts from similar security firms, BestBuy has started moving the botnet’s command and control servers to Tor. “It’s all good now. We don’t need to pay thousands to ISPs and hosting. All we need is one strong server,” the hacker said. “Try to shut down .onion ‘domains’ over Tor,” he boasted, knowing that nobody can.

Read more of this story at Slashdot.

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